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Custom prescription Prescription lenses for Ray-Ban RB3857 Frank
RB3857 frame with the chosen lenses

This is how your lenses would look

Illustrative image: colours, shape and engraving may vary slightly in the final result.

Ray-Ban · Prescription

Prescription lenses Ray-Ban RB3857 Frank

A pair made to measure for your Ray-Ban RB3857. Choose the use, finish and prescription; we check your prescription details before making it.

Complete pair Prescription checked 3-year warranty
$ 48.74 configured price · per pair
Select the lens sizeChoose your lens size
Select your favorite tint. Any doubts? Polarized lenses eliminate annoying reflections and Photochromic lenses darken in the sun.
All our solid colors offer 85% darkness (Category 3), ideal for sun protection.
Fantasy solid colors have 75% darkness. Gradients range from 85% at the top to 15% at the bottom (Category 3).
All mirrored colors offer 85% darkness (Category 3) for maximum sun protection.
Both colors reach up to 80% darkness outdoors under optimal sun conditions.
We never engrave registered trademarks (logos or names of Ray-Ban, Oakley or other brands).
JPG, PNG, WebP or PDF, up to 10 MB. Your own images or logos only: we do not engrave registered trademarks (logos or names of Ray-Ban, Oakley or other brands).
Note: Locations are shown in front view (as if looking at another person).
Your configurationPrescription lenses RB3857
$ 48.74 per pair
Model
Ray-Ban RB3857 Frank
Product
Made to measure · prescription checked
On backorder · ships in 3–6 business days
Quantity: 1 Total $ 48.74
Personalized product. We'll review your prescription and compatibility before production. Not returnable except in the case of a manufacturing defect.
Before you enter your details

Your prescription, explained simply

Use this guide to recognise each value. If something doesn't match or isn't on your prescription, attach a photo and we will check it before manufacturing.

SPHSphereIndicates nearsightedness (−) or farsightedness (+). Always keep the sign.
CYLCylinderCorrects astigmatism. If it's blank, the axis is usually blank too.
AXISAxisShows the orientation of the astigmatism, between 0° and 180°; it is not a power.
PDPupillary distanceThe distance between your pupils, in millimeters. On this page it's entered as a binocular value.
Material and index

The right thickness for your prescription

The index indicates how much the material bends light. A higher index allows a thinner lens when the prescription is strong.

1.50–1.67
ProductOrganic lens
ProductionMade to measure
Contents1 pair
Index1.50

Standard CR39 option for low prescriptions at a lower price.

Standard thickness
Index1.60

High-index organic material for a thinner lens.

Depending on finish
Index1.67

Available in clear lenses for strong prescriptions within the supported range.

Clear · 4–6 D

Clear vision

Optical materials selected to provide natural vision for everyday wear.

Thinner lenses

Higher indexes need less material to correct the same prescription.

Protected finish

The coating available depends on the tint and index chosen.

Specific cut

Each pair is made to the exact shape and lens size of the RB3857.

From the configurator to your order

One process, checked step by step

From the moment you confirm your configuration until we prepare your shipment, every decision is checked so we make the right pair.

1
Your choice

Configure

Select lens size, use, index, finish and personalization.

2
Prescription checked

We review

We check your prescription, pupillary distance and that the configuration is consistent.

3
Our workshop

We make and inspect

We cut the pair, check the result and pack it securely for shipping.

Our workshop · General process
CristalesRepuesto technician checking a lens in the Granada workshop
Real people, our own workshopWe review every prescription before production
Why choose ReplacementLenses

Your prescription doesn't go straight into production

We check the prescription details, the pupillary distance and that the configuration is compatible. If we have any doubt, we contact you before manufacturing.

Prescription checked

We validate that the data for both eyes and the choice of index are consistent.

Specific cut

We make the pair for the exact shape and lens size of the RB3857.

Team in Granada

Customer service and production control by our specialist team.

3-year warranty

Coverage against manufacturing defects and after-sales support.

Meet our team Talk to us
Model-specific guide

Install your RB3857 lenses correctly

This metal frame closes the rim with a screw. Loosen it without forcing the lens or bending the frame front.

Step-by-step videoSpecialist support
More information

Everything about this replacement part for the Ray-Ban RB3857

Prescription Lenses for Ray-Ban 3857

Restore your iconic Ray-Ban 3857 Frank glasses with our replacement prescription lenses and avoid the cost of buying a new frame. These replacement prescription lenses for Ray-Ban are not manufactured by Ray-Ban. When your lenses are scratched or worn, simply changing them brings back the clarity and unmistakable style you love.

Our configurator lets you personalize your lenses to match your prescription needs, with options for a range of coatings and tints for both regular and sun lenses. Available in 1.5, 1.6, or 1.67 index, these CR39 lenses provide excellent optical performance for your daily eyewear or sunglasses.

Compatibility of Prescription Lenses for Ray-Ban 3857

Check the model number 3857, engraved on the inside of your frame’s temple, to confirm compatibility. The square-shaped lenses are designed for heights of 42 and 44 mm, diameters of 53 and 56 mm, and a base curve of 6 to precisely fit the Ray-Ban 3857 Frank frame.

Features of Prescription Lenses for Ray-Ban 3857

  • UV400 full protection
  • Polycarbonate lenses for impact resistance
  • Lightweight comfort for all-day wear
  • Accurate fit in the Ray-Ban 3857 Frank frame

How to Install Replacement Lenses

Replacing the lenses at home is simple and safe with basic tools and careful handling. Loosen the frame slightly, remove the old lenses gently, and fit the new ones securely in place. Your Ray-Ban 3857 will look and feel refreshed in no time.

Maintenance and Warranty

Clean your lenses with water and a microfiber cloth to keep them spotless and extend their lifespan. We offer a 3-year warranty against manufacturing defects (this warranty does not cover scratches caused by normal use).

Prescription lenses for Ray-Ban RB3857 Frank
Real experiences

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We answer your questions

FAQ

Is the price for one lens or for the pair?

It's for a complete pair made with the data for both eyes.

What if I don't understand some of the data?

Write to us with any questions before buying, or give us the details exactly as they appear on your prescription: we will check the configuration before starting production.

What's the difference between the indexes?

1.50 is the standard option. Higher indexes reduce thickness for strong prescriptions; their availability depends on the finish.

Do they come with a warranty?

Yes, 3 years against manufacturing defects.

Search by reference

Find your glasses' reference

Look on the inside of one of the temple arms. That's where you'll find the details needed to find the right replacement part.

Inside of a Ray-Ban temple arm showing reference RB2140, color 901, lens size 50, bridge 22 and arm length 150
RB2140Frame model
901Color code
50Lens size
22Bridge width
150Arm length
●

To find lenses: the model and lens size are usually enough. For arms: we also recommend checking the color and length.